excision (n.) Look up excision at Dictionary.com
late 15c., from Middle French excision (14c.) and directly from Latin excisionem (nominative excisio) "a destroying," noun of action from past participle stem of excidere "to cut out; destroy," from ex "out" (see ex-) + -cidere, comb. form of caedere "to cut down" (see -cide).